FAQs

How Are Websites Blocked at School?

Most schools around the world are required to filter their students’ internet access in order to comply with the law.

In the US, for example, the Children’s Internet Protection Act (CIPA) forces public schools to block websites that contain obscenity, pornography, and any other images that may be harmful to minors.

How each school chooses to implement its filters is up to them, but there are generally three options:

  1. Third-party software and services. Schools can subscribe to dedicated software platforms – such as GoGuardian, Securly, or WebTitan – which provide a range of tools to help administrators and teachers monitor, filter, and control student internet usage.

    These services can be integrated into the school’s existing network, installed directly onto student devices, or configured so that all traffic on the school’s WiFi is routed through the software’s network infrastructure.

  2. Set up network-level restrictions. School administrators may configure website restrictions themselves by creating a local firewall that filters all traffic traveling through the school’s network.
  3. Network-level website blocks can filter by:

    • Website URL – The administrator creates a list of URLs which are blocked if detected. This is the most common type of website block in schools.
    • IP Address – The administrator creates a list of website IP addresses which are blocked if requested.
    • Content Category – Schools can buy third-party databases that sort thousands of websites into categories like “Social Media” or “Gaming”. The administrator can then block entire categories.
    • Keyword – More sophisticated filtering techniques allow administrators to block websites according to the actual keywords present on the page.

    NOTE: Most school administrators don’t have the time or resources to use sophisticated filtering techniques. In comparison, third-party services are much more likely to use them. GoGuardian, for example, uses AI to block webpages in real-time based on the text and images present on the page.

  4. Device-level restrictions. Administrators or third-party services can install content filters directly onto a school-owned device. This is common on school Chromebooks, where tools like the Lightspeed Relay Extension can impose website blocks that work even when the student is at home.

    These filters can be configured to block websites based on URL, IP, Content Category, Keyword, or a combination of several factors.

NOTE: Even if your school Chromebook doesn’t have content filtering software installed on it, Chromebooks can be configured to always route student traffic via school servers. If that’s the case, your school’s network-level restrictions will still apply to you, even when you use your Chromebook at home.

EXPERT TIP: It’s common for schools to use screen monitoring software on school computers and chromebooks. Although it’s not a type of website block, this technology allows teachers to see exactly what you’re doing on your computer. In some cases, they may also have the ability to manually block your connection.

For example, if your school uses a tool like Deledao Classroom, the staff have a “birds-eye” view of every Chromebook connected to the school WiFi. If you’re unblocking websites, they will know.

Can a Network Administrator See If You're Unblocking Websites?

If you use a web proxy, a URL shortener, or the Wayback Machine to unblock websites then the WiFi network administrator can see from the network logs that you’re visiting those websites.

Likewise, the network administrator can usually tell when you are using a VPN app or a VPN Chrome Extension. That’s because VPN traffic leaves a specific signature in the network logs, usually in the form of VPN protocols, port numbers and encrypted packets.

The only solution to this is to use a VPN with obfuscation.

The only method in this list that hides that fact you’re unblocking websites from the school administrator is switching to mobile data. By no longer connecting to the local network, your school administrator loses the ability to monitor your activity.